Nathan m



@uitrit tutes @sind ffirr.

iursovnMrNT ni STUMP nxrnicrons.

@the .rbehnle referat in .in there trtter atmt `:mit making part nf thetame.'

TO ALL WHOM IT MAY CONCERN: y y

Be it known that I, NATHAN M. HEALY, of Flushing, in the county ofGenesee,.and State of Michigan,

have invented a new and improved Stump Extractor; andI do hereby declarethat the following is a full, clear,

and exact description thereof.

The nature of this invention 'consists in so arranging an uprighthoisting-bar and levers on anupright` l frame, and operating them bychains and ropes, that a. very great lifting power shallbe imparted to`thebar, thereby enabling me to extract stumps from the ground in acheap and simple manner.

To enable others skilled in the art to make and use my invention, I willproceed `to describe 'the same,` reference being had to the accompanyingdrawings which form a part of this specification, `and to the lettersiofreference marked thereon. i i

Figure 1 represents a. front elevation of .the machine. Figure 2 is avertical sectional elevation through the line x :c of fig. 1. Figure 3is a view of the hold-fast bar; and` Figure 4 isa top or plan view ofthe machine. The same letters of reference refer to like parts.

A represents runners, or foundation-timbers of the machine; B, the postsor supports, standing-in a 1` bracing or inclined position from thecorners towards the centre. C represents the cap-pieces, restinghorizontally on the top of Bf I) is an upright piece attached to oneot`the cap-pieces C; E is'the hoisting-bar,

to which the power exerted on the lever is applied. Frepresents thelevers. G, the chains which communicate the power from the levers to thehoisting-bar. H is the rope (orchain)`to which the power is appliedwhich operates the machine.' I is a rope by which theouter ends of thelevers are elevated. The hoisting-baii being of properlength andsize,has a strong hook upon the lower end, (the-bar standing in au uprightposition, but hanging loosely,) to which the chain is attached that isfastened to the stump when the machine is in use. The edges of thishoisting-bar are notched, ratchet-like, as at c", the notches being atsuitable distances l apart, and alternating from one side to the other,so that the bar may be sustained from either edge, and` the shoulder, orthe deepest part of the notches, shall not he directly opposite.`l-There are two pulleys i or;` sheaves near the lower end of tliisbamoneon each side, opposite each other, and working on the ends of the 1 samepin.l The hold-fast bars, (which act like pawls in a ratchet,) aresimply pieces of round iron, with the i ends turned up, and rest in`recesses formed in blocks, which are ixed upon the cap-piece C. Thesehold-fast bars A E are represented by the iig. 3, with a section. Theblocks having the recesses in which these 4bars rest, are i representedby the letter C. The recesses incline inwardly as they descend, so thatthe holdfast bars constantly rest againstthe hoisting-bar, and dropintolthe notches on the bar by their own gravity, the bar playing up yand down between them.l There arefour posts or braces to theV frame, twoin frontand two in rear, each pair supporting one of the caps C. Thesecaps C support the blocks G', and also the boxes for the lever fulcra J.The levers F work upon fulcra J. The inner ends of these leversformeircles, the4 fnlcrum being placed below i `1 the centre, so thatthe end formsan eccentric. The periphery df this circle or ,eccentric isgrooved or hallowed out. The outer ends have pulleys or sheaves attachedto them. The chains`G have long links at their lower y ends, whichsurround the hoisting-bar,and which lift against the shoulders ornotcheswin the bar, upon opposite sides, as seen ih the drawing. Theother ends of these chains are firmly attached to .the top` of thelevers F, l resting in the grooves before mentioned. The power of thelevers is transmitted to the hoisting-bar by these z chains. The uprightpiece D, which is attached to the rear cap-piece` C, has 'also tw'opulleys, one on the upper f i .y end, and the other pulley just belowit. The rope H (it may be a chain) is first` attached to thelowe end "ofi` the hoisting-bar, drawing against the lowest notch in the bar. It`then passes upward and around the pulley on the end of one of thelevers, at a, thendown under one of the pulleys, near Athe lower end ofthe`hoisting-ba.`r,

at b then upwards and around the 'pulley on the other lever at c andthen down and around thefothier pulley` l on the hoisting-bar, extendingthence in a horizontal direction, when in use, and to which the power isattached` which operates the machine, The ropes and k are attached toeach of` the levers, at d and The` rope i `passes from d over one of thepulleys on the upright pieces D, and the rope k passes from the otherlever, at f,

, over the other pulley on D. These ropes join at n, and are operated byI. Itwill be seen that, by pullingupon` 'the rope I, the ends ofthelevers will be elevated. This is done whenever it is necessary to lowerthe hoistingbar to take a new hold. 'lhc operation or effect of drawingupon the rope will be, to depress the ends of the levers and draw themtogether. This, of course, draws upon the chain G, and the effect is toraise the hoistingbar E. The hold-fast bars, lying loosely against theedges of the bar, drop into the ratchets or notches, and when the powerceases to be applied, they (either one or the other,)catch the bar andhold it. It will be noticed that these levers act with the greatestpower as they descend, it being an increasing force, and this being the`case :it n, time when the greatest force or power 'is necessary, (thatis, after all the slack has been teken up.) The advantages-of myarrangement will be understood at once. Y

Having thus described my invention, what Iclaim as new, and desire' tosecure by Letters Patent, is-

The hold-fast bars E', slotted blocks C', levers F, and chains G, incombination with the notched bar E, Cap-piece C, upright D, inclinedsupports B, and runners A, arranged and operating substantially asherein shown and described.

NATHAN M. HEALY,

Witnesses:

JOHN HUNTER, E. GRAY.

